about 1 month ago there was a fuel pump fault ,so I changed it& INJECTOR SYSTEM IS BEEN WASHED.

2-3 days later I had the same fault & I just changed the fuel filter but I still have problem & I receive the fuel pump fault & the vehicle swathe off & when I go to a wet whether I don't see the error but in the dry whether I have the problem I said.

by the way I live in Iran & I cant reach a real BMW technician ,would you please help me to know which parts of this vehicle can make this fault and which mechanical parts should be tested .